1023213401 has 4 divisors (see below), whose sum is σ = 1169386752. Its totient is φ = 877040052.

The previous prime is 1023213383. The next prime is 1023213419. The reversal of 1023213401 is 1043123201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1043123201 = 67 ⋅15569003.

It is an interprime number because it is at equal distance from previous prime (1023213383) and next prime (1023213419).

It is not a de Polignac number, because 1023213401 - 2²⁶ = 956104537 is a prime.

It is a super-3 number, since 3×1023213401³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023213401.

It is not an unprimeable number, because it can be changed into a prime (1023213421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73086665 + ... + 73086678.

It is an arithmetic number, because the mean of its divisors is an integer number (292346688).

Almost surely, 2^1023213401 is an apocalyptic number.

It is an amenable number.

1023213401 is a deficient number, since it is larger than the sum of its proper divisors (146173351).

1023213401 is an equidigital number, since it uses as much as digits as its factorization.

1023213401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146173350.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1023213401 is about 31987.7070294199. The cubic root of 1023213401 is about 1007.6786871790.

Adding to 1023213401 its reverse (1043123201), we get a palindrome (2066336602).

The spelling of 1023213401 in words is "one billion, twenty-three million, two hundred thirteen thousand, four hundred one".